Effects of the magnetic resonance contrast medium ferrioxamine methanesulfonate on systemic and renal hemodynamics in the anesthetized dog

William L. Niedrach, Frederick W. Tonetti, Richard W Katzberg, Thomas W. Morris, Janine A. Ventura, Saara Totterman, Louis R. Cos

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Ferrioxamine methanesulfonate (S-FDF) is a new magnetic resonance (MR) contrast agent developed to improve magnetic resonance imaging of the abdomen and pelvis. This stable complex of deferoxamine methanesulfonate and iron is excreted in the urine by glomerular filtration modified by active renal tubular resorption. This study examines the acute systemic and renal hemodynamic responses to this agent after intravenous administration either as an infusion of 25 mg/kg over 5 minutes or as a rapid bolus at a dose of 50 mg/kg. In eight anesthetized dogs, renal plasma flow (RPF) was measured with an electromagnetic flowmeter, and GFR was determined by the renal extraction of technetium-99m-DTPA. Mean arterial pressure (MAP), pulse rate, and a lead IIECG were assessed. At a dose of 25 mg/kg over 5 minutes, MAP decreased significantly (control 146.0 ± 6.5 mm Hg vs. 107 ± 18 mm Hg at 2 minutes;F,<.05). In two of the eight animals, the MAP dropped below 60 mm Hg. Significant decreases in GFR and RPF also were noted. All four of the animals receiving the rapid injection of S-FDF experienced profound hypotension (MAP < 50 mm Hg). The drop in heart rate from 152 ± 11.6 bpm to 121 ± 4.9 bpm was associated with a marked depression of the ST wave in the lead II ECG. Further animal studies are needed to assess the mechanism of toxicity and a potential synergism of action with pentobarbital anesthesia.

Original languageEnglish (US)
Pages (from-to)687-691
Number of pages5
JournalInvestigative Radiology
Volume23
Issue number9
StatePublished - 1988
Externally publishedYes

Keywords

  • Contrast medium
  • Ferrioxamine methanesulfonate
  • Nuclear magnetic resonance

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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    Niedrach, W. L., Tonetti, F. W., Katzberg, R. W., Morris, T. W., Ventura, J. A., Totterman, S., & Cos, L. R. (1988). Effects of the magnetic resonance contrast medium ferrioxamine methanesulfonate on systemic and renal hemodynamics in the anesthetized dog. Investigative Radiology, 23(9), 687-691.